CN108039126B

CN108039126B - A kind of LED array wiring method and display system

Info

Publication number: CN108039126B
Application number: CN201711285058.5A
Authority: CN
Inventors: 熊木地; 谢亮天; 刘磊传; 范婷; 刘盼; 全日龙
Original assignee: Dalian Maritime University
Current assignee: Dalian Maritime University
Priority date: 2017-12-07
Filing date: 2017-12-07
Publication date: 2021-04-23
Anticipated expiration: 2037-12-07
Also published as: CN108039126A

Abstract

The invention discloses an LED array wiring method and a display screen system, and further discloses an LED module suitable for the display system and a coding method for controlling LED work. The LED array wiring method can greatly reduce the wiring quantity and the quantity of driving systems, effectively solve the problem of complicated wiring of the array type LED, save the cost and realize the cutting of any LED except the LED forming a loop. In addition, the number of the LEDs can be increased by increasing the number of the wires in the vertical direction, and the display area can be increased by adopting a mode of cascading a plurality of LED modules, so that the LED display device has the advantages of convenience in installation, convenience in disassembly and the like.

Description

LED array wiring method and display screen system

Technical Field

The invention relates to an LED display system, in particular to an LED array wiring method and a display screen system.

Background

With the aging of LED display technology, the development of terminal display media is also diversified, and the application of acrylic boards as a display media carrying array LEDs is becoming more and more widespread. However, the wiring of the display medium of the array-type LED terminal is complicated, the existing LED needs to participate in the wiring in the horizontal direction to form the LED in the loop, so as to realize the light emitting function, and as the number of the LEDs increases, the number of the driving modules increases linearly, and the LED is difficult to cut and has poor transparency. Based on the current situation, a more scientific and convenient routing method is urgently needed to solve the above problems.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a flexible wiring manner, which not only saves wiring resources, but also can further improve the light transmittance of an LED system.

An LED device comprises a substrate and an LED fixed on the substrate, wherein a group of double-end horizontal pins and at least two groups of double-end vertical pins are LED out of the substrate; the horizontal pins are connected with the horizontal wiring, the first group from the left of the vertical pins is a power input pin connected with a power line, the anode of the LED is accessed from the upper port of any one of the rest vertical pins, and the rest vertical pins are in short circuit.

The LED module based on the device comprises N multiplied by N matrix-arranged LEDs, and is characterized in that the LEDs at the positions of the main diagonal lines of the matrix arrangement are the LED devices, and the LEDs at the other positions are conventional LED devices.

A LED routing method is characterized in that a plurality of LED modules are connected to a plurality of horizontal wirings and vertical wirings; all driving systems are completely centralized at the top end of the array, and no driving system is arranged in the vertical direction.

Further, the LED routing method further comprises the step of realizing the lighting control of the LEDs by coding the output port of the driving system at the top end of the array.

An LED display screen is characterized by comprising two pieces of transparent media and LED devices which are adhered between the two pieces of transparent media and are connected and arranged by adopting the wiring method.

Further, the transparent medium is an acrylic plate, a plastic plate or glass.

1. Through the technical scheme, the invention discloses a special LED wiring mode and provides an LED device suitable for the design, so that the driving system is not arranged in the vertical direction, all the driving systems are completely concentrated at the top end of an LED array, and the wiring in the horizontal direction only plays a role of a bridge for signal transmission. Each LED has a lighting code in a fixed form, so that the design of the front-end circuit can be simplified to a considerable extent, the waste of wiring resources is reduced, and the light transmittance of the LED display screen can be increased;

2. by adopting the wiring method disclosed by the invention, a driving system is not arranged in the vertical direction, so that seamless splicing can be realized when cascade connection in the horizontal direction is carried out.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional LED device;

FIG. 2 is a schematic view of an LED device according to the present invention;

FIG. 3 is a schematic diagram of an LED routing method according to the present invention;

FIG. 4 is a schematic diagram of a cascade of LED units according to the present invention;

FIG. 5 is a schematic diagram of the LED unit trimming of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following describes the technical solutions of the embodiments of the present invention clearly and completely with reference to the accompanying drawings in the embodiments of the present invention:

the invention discloses an LED device which comprises a substrate and an LED fixed on the substrate, wherein a group of double-end horizontal pins and at least two groups of double-end vertical pins are LED out from the substrate, namely at least two groups of ports, namely a power line and a group of return lines, exist. The horizontal pins are connected with the horizontal wiring, the first group from the left of the vertical pins is a power input pin connected with a power line, the anode of the LED is accessed from the upper port of any one of the rest vertical pins, and the rest vertical pins are in short circuit.

As shown in fig. 2, there is shown a preferred embodiment of the present invention, that is, a set of ports a11 and a12 are provided in the horizontal direction of the substrate, and three sets of ports b11 and b12, b21 and b22, b31 and b32 are provided in the vertical direction; the ports a11 and a12 are connected to horizontal wirings, respectively. In the embodiment, a11 and a12 are short-circuited by horizontal wiring; the ports b11 and b12, b21 and b22, b31 and b32 are respectively connected with vertical wiring, the ports b11 and b12, the ports b31 and b32 are all short-circuited through the vertical wiring, and the upper port b21 is connected with horizontal wiring to form a loop. Since the horizontal wiring does not participate in the formation of the loop, it does not affect the driving and lighting of the LED, and thus, it is not necessary to provide a driving device in the horizontal direction. Fig. 1 is a schematic diagram of a conventional LED device, in which a group of ports is connected to a horizontal wiring, and two ports are short-circuited through a wire, a group b is connected to a vertical wiring, and a group b of ports of a common LED is short-circuited through a wire.

The invention also discloses an LED module based on the device, which comprises N multiplied by N LEDs arranged in a matrix manner, and is characterized in that the LEDs at the main diagonal positions of the matrix arrangement are the LED devices, and the LEDs at the other positions are conventional LED devices. As shown in fig. 3, for processing a12 × 12 LED module, increasing the number of driving pins can increase the number of rows and columns, so that a plurality of LED modules can be combined into an LED unit in a cascade manner, as shown in fig. 4, which is a schematic diagram of a module horizontal cascade, and since a driving system is not arranged in the vertical direction, seamless splicing can be realized during the cascade in the horizontal direction.

The invention also discloses an LED wiring method which is characterized in that a plurality of LED modules are connected to a plurality of horizontal wirings and vertical wirings; all driving systems are completely centralized at the top end of the array, and no driving system is arranged in the vertical direction. Further, the LED routing method further comprises the step of realizing the lighting control of the LEDs by coding the output port of the driving system at the top end of the array. The wiring method is based on a group of double-end horizontal pins LED out from each LED substrate and a plurality of groups (at least two groups, because at least one group of power lines and one group of return lines) of double-end vertical pins. The horizontal pin is connected with the horizontal wiring, the first group from the left of the vertical pin is connected with the power line through the power input pin, and the anode of the LED is connected from the upper port. Each module has one special LED, the upper end pin of the second group of the LED substrate is used for forming a driving loop (only limited to the special LED) of the first module at the LED of the row, the third group of wires are directly short-circuited, namely similar to a horizontal line and only play a role of a bridge for transmitting signals, the purpose is to form a driving loop of the special LED at the same position of the next module, and the next group is analogized in sequence.

By adopting the LED device and the wiring mode, the LED device can be cut at will except the LED device, namely, the line or the row can be cut off any one or more conventional LEDs except the LED device disclosed by the invention without influencing the normal work of other LEDs, and if the LEDs in the invention are cut off, all the LEDs in the line can not form a loop, which is equivalent to cutting off all the LEDs in the line. The dashed line in fig. 5 shows the clipping of the present invention.

In addition, the display length in the vertical direction can be increased by adopting the wiring mode of the invention, the number of LEDs taking a module as a unit can be conveniently increased in the vertical direction by adopting the wiring mode, in fact, each line in the vertical direction can drive an LED array of one module except for a power line, and the specific increasing mode can refer to the lowest LED module part in the attached figure 3.

The invention adopts a coding mode to realize the lighting of the LEDs, and because the driving systems are not arranged in the vertical direction and all the driving systems are concentrated at the top end of the array, the output port of the driving system at the top end can be coded, and each LED has a lighting code in a fixed form, thus the design of a front-end circuit can be simplified to a great extent, and the possibility of realizing the display of video signals is realized. The special encoding and decoding mode is to determine the LED to be lit according to the pattern to be lit, number the pins for directly driving the LED, decode the input signal into a high-low level signal through a decoder to drive the LED to work, and have a single corresponding code for a certain LED, for example, the code label corresponding to the first row of LEDs in the first row is 101011011011. The LED array unit is used as a unit to code a driving pin connected with a vertical wire, the LED is lightened according to the coding information, and then the display of characters or images is completed in a scanning mode.

The invention can also realize the cascade in the horizontal direction by processing the expansion in the vertical direction, each cascade unit has the input end and the output end of the signal, and has the latch latching signal, the control unit determines whether the signal is output in the unit, the signal sent in from the input port is firstly sent to the farthest cascade unit, then the signal is spliced in sequence, the display of the whole image is completed, and the details are shown in figure 4.

The invention also provides an LED display screen which is characterized by comprising two pieces of transparent media and LED devices which are adhered between the two pieces of transparent media and are connected and arranged by adopting the wiring method. Further, the transparent medium is an acrylic plate, a plastic plate or glass.

Specifically, as a preferred embodiment of the present invention, the LED display screen in this embodiment is a transparent plastic splint, and the LEDs are disposed between two plastic splints according to the special wiring manner of the present invention, so that wiring resources can be saved, and good light transmittance can be ensured.

Due to the adoption of the special wiring mode, the problem that the wiring of the array type LED is complicated is effectively solved, the wiring number and the number of driving systems are greatly reduced, the cost is saved, and the cutting of any LED except the LED (special LED) forming a loop can be realized. The number of the wires in the vertical direction is increased, so that the number of the LEDs of one unit module can be correspondingly increased, and the display area can be increased by adopting a mode of cascading a plurality of modules. Has the advantages of convenient installation, convenient disassembly and the like. The lighting condition of the LEDs is coded by adopting a signal coding and decoding mode, each LED has a code corresponding to the LED, each code can only light one LED, and a driving signal corresponding to the code is only sent to the driving end when a certain LED is required to be lighted, so that the system can be controlled to code conveniently.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The LED wiring method is characterized in that a plurality of LED modules are connected to a plurality of horizontal wirings and vertical wirings; all driving systems are completely concentrated at the top end of the array, and the driving systems are not arranged in the vertical direction;

the LED module comprises N multiplied by N LEDs arranged in a matrix manner, the LEDs at the main diagonal positions of the matrix arrangement are special LED devices, and the LEDs at the other positions are conventional LED devices; the special LED device comprises a substrate and an LED fixed on the substrate, wherein a group of double-end horizontal pins and at least two groups of double-end vertical pins are LED out of the substrate to form at least one power line port and a group of loop line ports; the horizontal pins are connected with the horizontal wiring, the first group from the left of the vertical pins is a power input pin connected with a power line, the cathode of the LED is accessed from the upper port of any one of the rest vertical pins, and the rest vertical pins are in short circuit;

each row of modules comprises a special LED arrangement, the upper leads of the second group of the substrates of which are used to form the driving circuit for the LEDs of the module in the row, and the third group of wires is directly short-circuited.

2. The LED routing method according to claim 1, further comprising implementing lighting control of the LEDs by encoding output ports of a driving system at the top of the array.

3. An LED display screen, characterized in that, it comprises two transparent mediums and LED devices adhered between the two transparent mediums and connected and arranged by the wiring method of any one of claims 1 or 2.

4. The LED display screen of claim 3, wherein the transparent medium is acrylic, plastic or glass.